i have a 2012 lfx.. i was wondering what the best headers are for it? i heard a lot of good things about the doug thorley headers, any information would be nice.... could they bolt on or do they have to be welded on? how hard of an install is it? and do they change sound and or a little bit of hp? any check engine light issues? thanks

The LFX comes from the factory with a header mod already done w/ HP gains....

At least that's how I look at it.

because well in my opinion it is a let down for the fact of the matter is that is one more thing that you can not change. Aren't aftermarket headers better for your engine ? the better the headers the less back pressure the engine has in thus adding more power to the car.